化工环保2011，Vol.31Issue(4)：298-303,6.
沉淀法处理含铜废水及其沉淀产物的表征
Treatment of Copper-Containing Wastewater by Precipitation and Characterization of Precipitate
摘要
Abstract
The simulated acidic copper-containing wastewater was treated using Ca(OH)2, Na2CO3 and Na2S as precipitants. The experimental results show that; The order of copper ion removal rates is Ca(OH)2 ＞Na2CO3 ＞Na2S; After precipitation for 60 min, the order of sludge sedimentation volumes is Na2CO3 ＞ Ca(OH)2 ＞ Na2S; The order of the supernatant turbidities is Ca(OH)2 ＞ Na2CO3＞ Na2S. With the increasing of the solution pH, the absolute value of ￡ potential of the supernatant decreases for Ca(OH)2 precipitant, but increases for Na2CO3 and Na2S precipitants. When Ca(OH)2 is used as precipitant, the main precipitates are CaSO4 ·2H2O and CuO; When Na2CO3 is used as precipitant, the main precipitate is Cu4(SO4) (OH)6·2H2O; When Na2S is used as precipitant, the main precipitates are CuS and CuSO4 · 5H2O. The advantage of using Ca(OH)2 as precipitant is evident.关键词
含铜废水/沉淀法/沉淀剂/ξ电位/浊度/污泥Key words
copper-containing wastewater/ precipitation method/ precipitant/ & potential/ turbidity/ sludge分类
化学化工引用本文复制引用
李新颖,Francis Ruzagiliza Innocent,陈泉源,薛罡..沉淀法处理含铜废水及其沉淀产物的表征[J].化工环保,2011,31(4):298-303,6.基金项目
上海市重点学科建设项目基金资助项目(B604). （B604）
